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What is CloudLinux and How Does It Help Shared Hosting?

What is CloudLinux?

CloudLinux is a linux based operating system designed to give shared hosting providers a more stable and secure OS. Essentially a set of kernel modifications to the Linux distribution, CloudLinux implements features to enable system administrators to take fine-grained control of their server’s resource usage. By isolating users, CloudLinux helps ensure that problems with one account don’t degrade the service for others.

CloudLinux virtualizes user accounts using a feature called LVE (LightWeight Virtual Environment). Each LVE is allotted a certain amount of resources (memory, CPU, etc.) which are separated from the server’s total resources.

If a particular account receives a sudden increase in traffic or begins to use a lot of CPU or memory, rather than slowing the entire server and possibly causing a failure, only that particular LVE will slow down.

 

How Does CloudLinux Help Shared Hosting Environments?

A shared hosting environment is one where hundreds of website accounts are hosted on a single server, sharing the server’s resources equally.

In a typical shared hosting environment, the server admin has limited control over individual website accounts’ server resource usage. If one website account is using an unfair amount of resources (e.g. due to being under a DDoS attack, poorly written script, increase in traffic, etc.), the entire server would become slow or go down completely, affecting all other customers on the server as well.

In traditional hosting, we can not set a limit for RAM, CPU, and other resource usage for a particular website account. Finding problematic websites is a time consuming job and fixing such issues sometimes requires suspension of the website accounts. This can easily lead to unsatisfied customers which can adversely affect your business.

What Happens When Issues Occur in a CloudLinux Hosting Environment?

In CloudLinux based shared hosting environments, once a website account reaches its limit of set resources, the site will begin to slow down. The website account consuming too many resources will temporarily stop working until resource usage returns to normal. Meanwhile, other website accounts on the server will continue to run normally.

In CloudLinux hosting environments, limits are put in place to protect against abusers and bad scripts, not to restrict the normal usage of an account.

Lets take a look at how CloudLinux can improve a shared hosting environment.

 

CloudLinux Features

The following is a list of features that make CloudLinux unique.

  1. A Personal Set of Server Resources for Each Customer – With the LVE technology in CloudLinux, each customer’s website account has a separate set of allocated resources. LVE ensures that these resources are not shared with any other website accounts.
     
  2. Stable Hosting Environments – Sudden traffic spikes from one website account will never mean downtime for any other website account or the server as a whole. Since every website account has its own allocated resources they remain protected. This keeps websites running even if a sudden spike in resource usage comes from other websites hosted on the server.
     
  3. Secured & Hardened Kernel – CloudLinux’s hardened kernel helps prevent malicious users from attacking other website accounts hosted on the same server.
     
  4. Multiple Versions of PHP – CloudLinux has a built-in feature called PHP selector. It allows end users to select the specific version of PHP they need. This allows ultimate flexibility by offering all popular versions of PHP, including more than 120 PHP extensions to choose from.
     
    CloudLinux packages PHP versions 4.4, 5.1, 5.2, 5.3, 5.4, 5.5, and 5.6. The convenient UI lets customers switch between versions, select extensions, and adjust PHP settings as needed.
     
  5. Stable Mysql Database Performance – MySQL often becomes a major headache for system admins in shared hosting environments. Keeping MySQL stable can be difficult, and customer queries can easily slow everything down.
     
    The MySQL Governor feature of CloudLinux helps system admins pinpoint abusers and throttle them in real time. It tracks CPU and disk IO usage for every website account in real time and reduces MySQL queries by using same-per-user LVE limits. With support for the latest versions of MySQL and MariaDB, it is a must-have for any shared hosting provider. 

 

In Closing

With all its features and advanced technologies, CloudLinux makes maintaining and stabilizing a shared hosting environment easier. This means less time and money spent on resolving frequent resource usage issues and fewer headaches for both hosting providers and their customers.

With CloudLinux, your websites remain stable, your servers stay secure, and your clients stay happy.

 

Popular Links

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Interested in more articles about Operating Systems? Navigate to our Categories page using the bar on the left or check out these popular articles:

Popular tags within this category include: Linux, Windows, Apache, CentOS, Debian, Fedora, RedHat, and more.

Don’t see what you’re looking for? Use the search bar at the top to search our entire Knowledge Base.

 

The Hivelocity Difference

Seeking a better Dedicated Server solution? In the market for Private Cloud or Colocation services? Check out Hivelocity’s extensive list of products for great deals and offers.

With best-in-class customer service, affordable pricing, a wide-range of fully-customizable options, and a network like no other, Hivelocity is the hosting solution you’ve been waiting for.

Unsure which of our services is best for your particular needs? Call or live chat with one of our sales agents today and see the difference Hivelocity can make for you.

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Backup your entire server’s data every night and have access to 5 days of rolling restore points.  Restore your server’s data, OS and configuration any time you need it.

Our Rapid Restore service saves the day during accidental data loss, hardware failures and virus contraction. Simply pick your recovery point and restore the data from that day. 

DDoS Protection

While our competitors may advertise DDoS protection, most often, they are merely implementing easily evaded router rules or simply black-holing targeted servers. They consider this “DDoS protecting their network.” However, neither of these solutions should give comfort to any online business. Should your site be attacked, chances are likely both of these options will end with your server being taken offline. At Hivelocity, we take the responsibility of keeping your servers online very seriously. For this reason, we offer two very serious forms of DDoS protection.

FREE

Every solution we provide includes our Filtering Edge of Network System (FENS). FENS is a series of proprietary systems that proactively monitors and protects the entire Hivelocity Network from most common Denial of Service (DOS) and Distributed Denial of Service (DDoS) attacks.

$15/MONTH PER SERVER

For an extra fee, you can enhance your server’s protection further with the addition of our Server Defense System. Our Server Defense System sits in front of your server, inspecting inbound data and looking for malicious traffic. The moment an attack is detected, it instantly begins scrubbing each data packet. Hivelocity’s Server Defense System delivers business continuity even in the face of massive and complex attacks.

Our Server Defense System is like adding an alarm and armed guard to your business, alerting you to and destroying anything attempting to jump that fence. Our Server Defense System utilizes internally developed proprietary systems in addition to Corero’s Threat Defense Smartwalls for data packet scrubbing. Each of our data centers is a scrubbing center with Corero Smartwalls on-premise, allowing us to provide on-prem zero-lag data scrubbing.

SSL Certificates

The security of your online commerce and protecting your customers’ data is as important to us as it is to you. When your customers see the green bar, they will know their connection to you is protected. We offer single domain, multi-domain, and wild-card certificates.

We offer industry leading 128-bit encryption certificates, allowing you to conduct e-commerce with complete security. Inspire confidence in your customers by displaying any number of seals and indicators certifying that your site is secure.

Load Balancing

Adding this service to two servers with identical content will allow you to distribute your load evenly across your hardware. Don’t lose business because you couldn’t handle the demand. Load balance and handle your biggest resource spikes with ease.

Firewalls

Stop attacks, prevent unauthorized access, and achieve regulatory compliance. Our Juniper hardware firewalls offload the work so your server never has to consume resources protecting itself from malicious traffic. A single firewall can be used to protect multiple servers.

Cloud Storage

Cloud storage offers users redundancy and easy accessibility, ensuring your data remains secure and readily available. Scale to as much as you need for only a 20¢/GB.

Cloud Storage is distributed and replicated across many servers, protecting your data from hardware failure. Highly scalable, it can handle thousands of client connections via TCP/IP. Connect to your virtual drive with SFTP, FTP, and SSHMount and in the future NFS and AFP. Cloud Storage is based on a stackable design which is upgradeable up to 2TB per instance.